Masou Kishin II on PSP debuts in the top spot on Media Create's software chart.

PlayStation Vita sales continued to fall following the holiday sales rush. For the week spanning January 9 through January 15, Media Create reports sales of 18,361 units for the system, down from last week's 42,915 units.

Vita's sales progression since launch looks like this:

324,859 -> 72,479 -> 42,648 -> 42,915 -> 18,361

Vita wasn't alone in seeing a post holiday drop. 3DS fell over 50% to just above the 100,000 mark. PS3 and PSP also saw drops, but remained above the Vita in overall sales.

Here's the full hardware chart for 1/9 to 1/15, with last week's sales in parentheses.

1. 3DS: 100,668 (240,819)

2. PS3: 30,332 (74,459)

3. PSP: 22,538 (71,033)

4. PSV: 18,361 (42,915)

5. Wii: 14,179 (49,525)

6. DSi LL: 1,515 (3,971)

7. X360: 1,519 (2,738)

8. DSi: 1,206 (3,565)

9. PS2: 766 (1,323)

Sales trackers may have noticed that Media Create appears to have stopped tracking DS Lite. The system was reported last week with just 28 unit sales.

The software chart for the same period show the first new releases for the year. PSP's Super Robot Taisen OG Saga Masou Shinki II debuted at top with 81,896 units. Also debuting in the top 10 were Nintendo and Tecmo Koei's Fatal Frame offshoot Spirit Camera and Namco Bandai's Ace Combat 3D.

Here's the full software chart, with life to date sales in parentheses.